metal-organic compounds
A three-dimensional polymeric potassium complex incorporating bridging water molecules and 2,4-dicarboxy-5-sulfonatobenzoate ligands forms a one-dimensional inorganic chain with cage-like K4(SO3)2 repeat units. The chains are bridged by carboxylic acid groups to form a two-dimensional layer, and these layers are further linked by carboyxlate groups and benzene rings to generate a three-dimensional framework.